package servlet.navigate;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.netscenery.yang.model.Deviate;
import com.netscenery.yang.model.Deviation;
import com.netscenery.yang.model.ModelException;
import com.netscenery.yang.model.Module;

import offer.GetDataSource;
import offer.GetNodeFromModule;
import operate.OperateType;

public class GoToFindDeviateServlet extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public GoToFindDeviateServlet() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html; charset=utf-8");
		request.setCharacterEncoding("utf-8");
		response.setHeader("Cache-Control","no-cache"); 
		PrintWriter out = response.getWriter();
		String deviateType        = request.getParameter("deviateType");
		//��ǰ·������Ҷ�ӽڵ��·��
		String pearent_nodeLevel  = request.getParameter("parent_nodeId");
		String[]  pearent_levels  = pearent_nodeLevel.split("\\\\");
		//������Դ
		Module       module       = GetDataSource.getDataRead(request);
		Deviation deviation       = (Deviation)GetNodeFromModule.getModuleElement(module, pearent_levels);
		Deviate deviate = null;
		try {
			deviate = deviation.createDeviate(deviateType);
		} catch (ModelException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		//��deviate���뵽deviation��
		deviation.addDeviate(deviate);
		
		//��ݳ־û�
		GetDataSource.getDataWrite(request, module);
		request.setAttribute("opType", OperateType.LOAD);
		request.setAttribute("itemNode", deviate);
		pearent_nodeLevel = pearent_nodeLevel +"\\"+deviate.getName();
		request.setAttribute("nodeId", pearent_nodeLevel);
		String url = "/items/"+ deviate.getClass().getSimpleName() +".jsp";
		ServletContext sc=this.getServletContext();
		RequestDispatcher rd=sc.getRequestDispatcher(url);
		rd.forward(request, response);
		out.flush();
		out.close();
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html");
		PrintWriter out = response.getWriter();
		out
				.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
		out.println("<HTML>");
		out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>");
		out.println("  <BODY>");
		out.print("    This is ");
		out.print(this.getClass());
		out.println(", using the POST method");
		out.println("  </BODY>");
		out.println("</HTML>");
		out.flush();
		out.close();
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occurs
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}
